Once your supplier base passes about 50 suppliers, spreadsheets stop working. Contacts live in email threads, certificates expire without anyone noticing, and nobody can tell you total spend by supplier without a week of manual work. The obvious answer is SRM software — but the enterprise platforms that dominate this market come with their own problems: rigid workflows, 12-18 month implementations, and annual licensing that can run into six figures.
We build custom supplier relationship management software for UK businesses. You tell us how your procurement actually works — the approval chains, the compliance requirements, the systems you already use — and we build around that. You own the result outright. No per-seat licensing, no reshaping your processes to fit someone else’s template. We’re a small London consultancy, which means we take on fewer projects and give each one more attention.
Why off-the-shelf supplier management software falls short
Most SRM platforms are built for very large enterprises with standard procurement processes. If that’s you, they might work fine. But for many UK businesses, the friction is real:
- Rigid approval workflows. Enterprise SRM tools typically offer linear or simple hierarchical approvals. If your organisation uses matrix management, regional overrides, or supplier-tier-specific approval chains, you’ll spend more time on workarounds than on actual procurement.
- Long, expensive implementations. Platforms like Ivalua and SAP Ariba are known for 12-18 month rollout timelines. Professional services costs often run 30-50% on top of the software licence. It’s not unusual for a mid-market organisation to spend £350,000-£800,000 over three years.
- Per-user licensing that scales badly. SaaS SRM is typically priced per user — £40-£160 per seat per month. A 50-person procurement team can cost £25,000-£100,000 a year in licensing alone, before you’ve paid for setup or integrations.
- Weak integration with UK accounting tools. Most enterprise platforms integrate natively with SAP and Oracle. If you’re running Xero, Sage, or QuickBooks — as many UK mid-market businesses do — you’ll find integration is either missing or requires expensive custom development.
- Supplier portal adoption problems. Off-the-shelf portals often have poor UX. Suppliers don’t adopt them, manual workarounds continue alongside the system, and you end up paying for a portal nobody uses.
- Data stays fragmented. Supplier master data diverges between your SRM and ERP. Purchase orders, invoices, and compliance records sit in different systems with no single source of truth. Three-way matching (PO, goods receipt, invoice) across systems is a recurring headache.
Teams end up spending more time managing the software than managing their suppliers.
What we build instead
We build supplier management systems that match how you already work:
- Process-first design. We map your supplier onboarding, contract management, evaluation, and approval processes before writing any code. The system fits your organisation — not the other way round.
- You own it outright. One build cost, no recurring SaaS fees. Scale to 200 users with no incremental licensing. Your annual running costs drop to hosting and maintenance — typically £15,000-£25,000 per year.
- Integrations that actually work. Custom APIs connecting your ERP (SAP, Oracle, NetSuite, Dynamics, Odoo), accounting software (Xero, Sage, QuickBooks), payment systems, e-signature tools, and communication platforms. Real-time sync where you need it, not batch updates that drift overnight.
- UK compliance built in. GDPR supplier data handling with proper consent and retention policies, Modern Slavery Act evidence trails, Making Tax Digital compatibility, and sector-specific requirements (HACCP, GxP, ISO standards) embedded in the workflow — not bolted on as afterthoughts.
- Grows with you. New supplier portals, KPI tracking, RFQ automation, spend analytics, or multi-entity support can be added later without rearchitecting the system.
- London-based team. Same-day support, no timezone headaches, and developers who understand UK procurement norms.
Features we commonly build
Every system is different, but these are the modules and capabilities we deliver most often:
Supplier master data and onboarding
- Centralised supplier records: legal entities, contacts, addresses, tax IDs, bank details, certifications, and parent/subsidiary relationships
- Configurable onboarding workflows with qualification questionnaires, document collection, and approval gates
- Supplier segmentation and approved supplier lists (preferred, approved, probationary)
Supplier portal
- Self-service portal where suppliers view orders, submit invoices, upload certificates, respond to RFQs, and communicate with your team
- Designed for actual adoption — clean UX, mobile-friendly, straightforward to use
Purchase orders and approvals
- PO creation with automated rules based on stock levels, budget thresholds, or contract terms
- Approval workflows that match your actual structure — multi-level, matrix, regional, or supplier-tier-specific
- Mobile approvals for purchase orders and supplier payments
- Three-way matching: PO, goods receipt, and supplier invoice
Performance tracking and risk
- Supplier scorecards tracking on-time delivery, quality defect rates, price variance, and responsiveness
- Risk scoring based on financial health, geographic risk, compliance status, and past performance
- Integration with external data sources like Dun & Bradstreet for financial health monitoring
Contracts and compliance
- Contract lifecycle management with renewal alerts, version history, and performance-based adjustments
- Certification tracking with automated expiry alerts (ISO 9001, ISO 14001, ISO 27001, ISO 45001, and sector-specific standards)
- Full audit trail: who created, modified, or accessed every supplier record, and when
- GDPR-compliant data handling with configurable retention policies
Reporting and analytics
- Spend analysis by supplier, category, department, and location
- Supplier performance dashboards and KPI monitoring
- Compliance status reports and certification gap analysis
- Role-based access so purchasing, finance, and department heads each see what’s relevant
How the build works
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Discovery and planning (2-4 weeks) — We run workshops with your procurement, finance, and operations teams to document current processes, approval chains, integration requirements, and compliance needs. We also audit your existing supplier data to plan migration.
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MVP development (8-12 weeks) — Our London team builds the core system: supplier master data, portal, approval workflows, and your primary ERP integration. You see working demos every two weeks and steer the build as we go.
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Testing and deployment (2-3 weeks) — User acceptance testing against your live systems. We run test data migrations and validate integrations before anything goes into production.
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Training and handover (1-2 weeks) — Role-specific training for procurement, finance, supplier-facing teams, and management. Written documentation included.
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Support (ongoing) — 12 months of included support. After that, flexible maintenance plans or full handover to your internal team — your choice.
Later phases can add RFQ workflow automation, advanced analytics, supplier ESG tracking, multi-entity and multi-currency support, or mobile portal enhancements.
What it costs
Custom development costs more upfront than starting a SaaS subscription. But enterprise SRM licensing adds up fast.
A mid-market organisation (say 200 staff, 150 suppliers) will typically pay:
- Enterprise SaaS (3-year cost): £350,000-£800,000 including licensing, setup, migration, integration, training, and mandatory annual support
- Custom build: Higher upfront investment, but annual running costs of £15,000-£25,000 for hosting and maintenance. No per-user fees. No surprise charges for custom fields, API calls, or additional storage.
The hidden costs in SaaS are what catch people out. Setup and onboarding fees (£15,000-£150,000). Data migration (£20,000-£120,000 depending on complexity). Integration work for non-native systems (£8,000-£160,000). Ongoing consulting for configuration changes. Annual support charges of 15-25% of the software cost, often mandatory.
We scope and price during a free consultation. Every project is different, and we’d rather give you an honest number than a range that means nothing.
When custom makes sense — and when it doesn’t
SaaS is probably fine if you have 50-200 suppliers with standard procurement processes, your ERP already has a native SRM add-on, and you’re comfortable with per-user licensing and vendor lock-in.
Custom makes sense when:
- Your approval workflows are genuinely complex — matrix management, regional autonomy, supplier-tier-specific rules
- You need tight integration with non-standard systems (legacy ERP, UK accounting tools, industry-specific platforms)
- Your sector has compliance requirements not covered by generic SRM (HACCP, GxP, ITAR, public sector procurement rules)
- You’re growing and per-user licensing is becoming unsustainable
- You want to go live in months, not years
- You want to own your supplier data and your codebase, with no vendor lock-in
Industry applications
SRM needs vary significantly by sector. Here’s what we typically build for each:
- Manufacturing — Multi-tier supplier networks (Tier 1, 2, 3), quality certification tracking (ISO 9001, AS9100), just-in-time delivery monitoring, defect rate scorecards, and dual-sourcing risk management
- Food and beverage — HACCP and BRC certification tracking, ingredient traceability and allergen management, supplier facility audit trails, and batch-level sourcing records
- Construction — Subcontractor compliance and insurance document management, project-specific procurement workflows, and performance tracking across multiple site locations
- Healthcare — Medical device supplier certification, sterility and traceability records, contract pricing management, and product recall tracking with full audit trails
- Retail — Purchase order automation for seasonal inventory, supplier fill-rate tracking, collaborative demand forecasting, and ethical sourcing compliance
- Public sector — FIND-a-Tender transparency and reporting, Modern Slavery Act compliance evidence, Crown Commercial Service framework alignment, supplier diversity tracking (SME, social enterprise)
- Pharmaceuticals — GxP-compliant supplier validation, FDA audit trail requirements, API (active ingredient) supplier qualification, and change management documentation
- Higher education — Multi-department procurement across facilities, IT, catering, and research, supplier diversity targets, and integration with departmental budgets
- Logistics — Carrier performance data integrated with freight audit systems, geographic risk monitoring, and multi-currency contract management
- Facilities management — Maintenance contractor tracking, SLA monitoring, certification expiry alerts, and planned maintenance scheduling
Common Questions About Custom Supplier Relationship Management Software
How does custom SRM cost compare to SaaS platforms?
Enterprise SRM platforms like SAP Ariba, Coupa, and Ivalua typically cost between £80,000 and £250,000 per year in licensing alone. Add setup fees (£15,000-£150,000), data migration, integration work, and mandatory annual support (15-25% of software cost), and three-year ownership often reaches £350,000-£800,000. A custom build has a higher upfront cost but far lower running costs -- typically £15,000-£25,000 per year for hosting and maintenance. Most clients break even within 18-24 months.
What's the typical development timeline?
A focused MVP -- supplier master data, basic portal, approval workflows, and one ERP integration -- typically takes 3-4 months. A full-featured system with advanced analytics, compliance modules, and multi-entity support takes 5-9 months. Either way, that's significantly faster than the 12-18 month implementation timelines common with enterprise SRM platforms.
What systems can you integrate with?
We build integrations with ERP systems (SAP, Oracle, NetSuite, Microsoft Dynamics, Odoo), UK accounting software (Xero, Sage, QuickBooks), payment platforms, e-signature tools like DocuSign, communication tools like Slack and Teams, and credit reference services like Dun & Bradstreet. We also support standard data formats including CSV, XML, JSON, and EDI where needed.
How do you handle data migration from spreadsheets or existing systems?
We start with a data audit to assess what you have -- supplier master records, contracts, purchase history, certifications, and contact details. We then clean and deduplicate the data, map it to the new system, run test migrations, and validate before going live. The whole process typically takes 6-12 weeks depending on how fragmented the existing data is.
What about data security and compliance?
All builds incorporate UK GDPR requirements: lawful basis for supplier personal data, data retention policies, role-based access controls, and full audit trails of who accessed or changed supplier records. We also build in sector-specific compliance where relevant -- HACCP for food, GxP for pharma, Modern Slavery Act evidence for public sector. We can advise on ISO 27001 alignment if needed.
Do you provide training for our team?
Yes. We provide role-specific training -- procurement teams get 2-3 days covering core workflows, finance teams get 1-2 days on invoice matching and reporting, and management gets a focused session on dashboards and KPIs. We also train your suppliers on the portal if applicable. All training comes with written documentation and follow-up support.
What happens after launch?
Every build includes 12 months of support covering bug fixes, minor adjustments, and technical queries. After that, we offer ongoing maintenance plans. Because you own the codebase, you're not locked in -- your internal team or another developer can maintain the system if you prefer.